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Equity and Long-Term Incentive Compensation Plans - Cash-Based Long-Term Incentive Compensation (Details) - Cash long-term incentive plan - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Cash Long-Term Incentive Plan |  |  |  |
Cash-based long-term incentive plan, granted amount |  |  | $ 5.6 | $ 4.0
Cash long-term incentive plan, compensation expense | $ 12.0 | $ 11.5 | 27.2 | $ 26.3
Cash long-term incentive plan, unrecognized compensation balance | $ 104.9 |  | $ 104.9 |

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- Definition Long-Term Incentive Plan, Granted Amount + References No definition available. + Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Details
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